WO2014139202A1 - 取向膜预固化装置 - Google Patents

取向膜预固化装置 Download PDF

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Publication number
WO2014139202A1
WO2014139202A1 PCT/CN2013/075077 CN2013075077W WO2014139202A1 WO 2014139202 A1 WO2014139202 A1 WO 2014139202A1 CN 2013075077 W CN2013075077 W CN 2013075077W WO 2014139202 A1 WO2014139202 A1 WO 2014139202A1
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WIPO (PCT)
Prior art keywords
alignment film
heating plate
substrate
curing device
support table
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Application number
PCT/CN2013/075077
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English (en)
French (fr)
Inventor
周永山
覃一锋
邵勇
孟维欣
Original Assignee
北京京东方光电科技有限公司
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Publication of WO2014139202A1 publication Critical patent/WO2014139202A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation

Definitions

  • Embodiments of the present invention relate to an oriented film pre-curing device. Background technique
  • the manufacturing process of the liquid crystal panel after completing the fabrication process of the array substrate and the color filter substrate, it is necessary to apply an alignment film on the array substrate and the color filter substrate, and then form an orientation on the alignment film by using a rubbing process. Achieving alignment of liquid crystal molecules. Therefore, the quality of the alignment film directly affects the alignment effect of the liquid crystal molecules in the liquid crystal panel, thereby affecting the display effect of the liquid crystal panel.
  • the formation mechanism of the alignment film is as follows: After coating a film of the alignment liquid on the substrate, the inside of the alignment liquid is reacted by the pre-curing and the main curing process, and at the same time, the solvent is volatilized, and finally the alignment film is formed.
  • the pre-curing of the alignment film is realized by an alignment film pre-curing device.
  • the existing alignment film pre-curing device comprises: a support frame 11 for carrying the substrate 12; a rectangular heating plate located below the support frame 11. 10; and a blowing device (not shown) located above the support frame 11.
  • the support frame 11 has four supporting edges, and the substrate 12 is placed on the support frame 11 to easily form a recess in the middle of the substrate 12 under the action of its own gravity, so that the middle of the substrate 12 is smaller than the circumference of the rectangular heating plate 10 to the periphery of the substrate 12.
  • the distance of the rectangular heating plate 10 causes the temperature of the oriented film on the middle portion of the substrate 12 to be higher than the edge.
  • the exhaust port of the blowing device faces the substrate and discharges gas to the entire substrate, and these gases are discharged from the periphery of the substrate, further causing the temperature of the central portion of the rectangular heating plate 10 to be higher than the edge. Therefore, when the alignment film pre-curing is performed by the conventional alignment film pre-curing device, the unevenness of the alignment film is likely to occur, which affects the quality of the pre-cured film and affects the display effect of the liquid crystal panel. Summary of the invention
  • Embodiments of the present invention provide an oriented film pre-curing device which can improve the pre-curing quality of an oriented film.
  • an alignment film pre-curing apparatus comprising: a support table for carrying a substrate; a heating plate located above the support table to perform an alignment film on the substrate Heating; and a driving device fixedly coupled to the heating plate to drive the heating plate to rotate.
  • the alignment film on the substrate may face upward.
  • the heating plate can completely enclose the substrate when rotated.
  • the heating plate may be a circular heating plate.
  • the substrate may have a rectangular shape, and the diameter of the circular heating plate may satisfy the following relationship:
  • d is the diameter of the circular heating plate
  • a is the width of the rectangular substrate
  • b is the length of the rectangular substrate.
  • the support table can include: at least three support feet and an insulated platform disposed over the at least three support feet.
  • the pre-curing device may further include: a cleaning device located above the support table for cleaning the support table.
  • the pre-curing device may further include: a range finder disposed on the support table or the heating plate for measuring the distance from the heating plate to the support table.
  • the range finder may be a laser range finder.
  • a support table having a flat support surface is used, and the heating plate is disposed above the support table and can be driven by the driving device; when pre-curing of the alignment film on the substrate is required
  • the base « is placed on the support table with the orientation film facing up; the heating plate heats the alignment film and rotates around the center of the heating plate at a certain rate, so that the alignment film is heated uniformly, thereby improving the quality of the alignment film pre-curing.
  • the rotation of the heating plate is used to drive the air flow, which reduces the blowing device, greatly reduces the structure of the alignment film pre-curing device, and reduces the manufacturing cost of the alignment film pre-curing device, compared with the prior art.
  • FIG. 1 is a schematic perspective view of a prior art alignment film pre-curing device
  • FIG. 2 is a schematic perspective view of an orientation film pre-curing device according to an embodiment of the present invention
  • FIG. 3 is a view showing a trend of hot air on a substrate surface in an alignment film pre-curing device according to an embodiment of the present invention
  • the present invention provides an alignment film pre-curing device, which is disposed above the support table and rotatable, and adopts a support table whose support surface is flat; when pre-curing the alignment film
  • the heating plate heats the alignment film in a rotating manner to make the alignment film uniformly heated, thereby improving the quality of the alignment film pre-curing.
  • the alignment film pre-curing device may include: a support table 20 for carrying the substrate 12; a heating plate 21 located above the support table 20; and a driving device 22 fixedly connected with the heating plate 21.
  • the heating plate 21 is driven to rotate.
  • the structure of the support frame 11 in the prior art is changed to the structure of the support table 20, and the heating plate 21 is disposed above the support table 20, and the heating plate 21 can be rotated by the driving device 22.
  • the substrate 12 is placed on the support table 20 with the alignment film facing upward, and the heating plate 21 heats the alignment film and is driven at a constant rate by the driving device 22.
  • the rotation causes the alignment film to be heated uniformly, thereby making the alignment film uniform in thickness, thereby improving the quality of the alignment film pre-curing.
  • the heating plate 21 since the heating plate 21 is disposed above the support table 20, the heat generated by the heating plate 21 does not need to pass through the substrate to directly heat the alignment film, thereby reducing heat loss.
  • the direction indicated by the arrow in the figure is the direction of hot air flow, and the rotation of the heating plate 21 accelerates the flow rate of the hot air, thereby improving the efficiency of pre-curing of the alignment film.
  • the rotation of the heating plate 21 is used to drive the air flow.
  • the blowing device can be omitted, the structure of the alignment film pre-curing device is greatly reduced, and the alignment film is lowered. The cost of preparation of the pre-curing device.
  • the above heating plate may have various shapes, such as an elliptical shape, a rectangular shape or a polygonal shape, and it is only necessary to ensure that the heating plate 21 can completely cover the substrate 12 when rotated.
  • the heating plate 21 may be a circular heating plate.
  • the heating plate 21 can be rotated to rotate around the center of the circular heating plate. As shown in Figure 4, the diameter of the circular heating plate can satisfy the following relationship:
  • d is the diameter of the circular heating plate
  • a is the width of the rectangular substrate
  • b is the length of the rectangular substrate.
  • the support table 20 can include: at least three support feet and an insulated platform disposed on the at least three support feet.
  • the four supporting legs are used to support the heat insulating platform.
  • the pre-curing device may further include a cleaning device 23, which may be located above the support table 20 for cleaning the upper surface of the support table 20.
  • the cleaning device 23 can clean the upper surface of the support table 20 before placing the substrate 12 on the support table 20 to remove substrate fragments and other contaminants on the upper surface of the support table 20 to ensure the pre-curing process of the alignment film. Clean and efficient.
  • the pre-curing device can also include a range finder 24 that can be placed on the support table 20 or the heating plate 21 for measuring the distance of the heater plate 21 to the support table 20.
  • the range finder 24 can be a laser range finder. The distance between the heating plate 21 and the support table 20 can be detected by the range finder 24 to prevent the heating temperature from being too high or too low during the pre-curing of the alignment film.
  • a support table having a flat support surface is used, and the heating plate is disposed above the support table and can be driven under the driving of the driving device;
  • the heating plate heats the alignment film and rotates around the center of the heating plate at a certain rate, so that the alignment film is heated uniformly, thereby improving The quality of the pre-cured film.
  • the heating plate is disposed above the support table, and the heat generated by the heating plate directly heats the alignment film without passing through the substrate, thereby reducing heat loss; and, because the heating plate 21 rotates, the heat is accelerated. Air flows, so the efficiency of pre-curing of the alignment film can be improved.
  • the rotation of the heating plate is used to drive the air flow.
  • the blowing device is omitted, thereby greatly reducing the structure of the alignment film pre-curing device and reducing the pre-curing of the alignment film. The cost of preparation of the device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

一种取向膜预固化装置，包括：支撑台，用于承载基板；加热板，位于支撑台上方以对基板上的取向膜进行加热；驱动装置，与加热板固定连接以驱动加热板转动。该取向膜预固化装置采用支撑面为平面的支撑台，加热板设置于支撑台上方且可在驱动装置驱动下旋转；当需要对基板上取向膜进行预固化时，将基板放置在支撑台上，具有取向膜面朝上；加热板以转动的方式对取向膜进行加热，使得取向膜受热均勾，从而提高取向膜预固化的质量。

Description

取向膜预固化装置 技术领域
本发明的实施例涉及一种取向膜预固化装置。 背景技术
在液晶面板的制造过程中， 在完成阵列基板和彩膜基板的制作工艺后， 需要在阵列基板和彩膜基板上各涂布一层取向膜， 之后采用摩擦工艺在取向 膜上形成取向， 以实现液晶分子的定向排列。 因此， 取向膜的质量将直接影 响液晶面板中的液晶分子的取向效果， 进而影响液晶面板的显示效果。
取向膜的形成机理是这样的： 在基板上涂覆一层取向液薄膜后， 通过预 固化和主固化工艺使得取向液内部发生反应， 同时使溶剂挥发， 最后形成取 向膜。 取向膜预固化是通过取向膜预固化装置来实现的， 如图 1所示， 现有 的取向膜预固化装置包括： 用于承载基板 12的支撑架 11; 位于支撑架 11下 方的矩形加热板 10; 以及位于支撑架 11上方的吹风装置（未示出） 。 支撑 架 11具有四个支撑边，基板 12放置在支撑架 11上，在自身重力作用下容易 在基板 12的中部出现凹陷，使得基板 12的中部距离矩形加热板 10的距离小 于基板 12的四周到矩形加热板 10的距离，从而导致基板 12的中部上的取向 膜的受热温度比边缘高。 而且， 吹风装置的排气口朝向基板并向整个基板排 出气体，这些气体从基板四周排出，进一步导致矩形加热板 10的中部温度比 边缘高。 因此， 采用现有的取向膜预固化装置进行取向膜预固化时， 容易出 现取向膜受热不均的现象， 从而影响取向膜预固化的质量， 进而影响液晶面 板的显示效果。 发明内容
本发明的实施例提供了一种取向膜预固化装置， 可以提高取向膜的预固 化质量。
根据本发明实施例的一个方面， 提供了一种取向膜预固化装置， 包括： 支撑台， 用于承载基板； 加热板， 位于支撑台上方以对基板上的取向膜进行 加热； 以及驱动装置， 与加热板固定连接以驱动加热板转动。
在实施例中， 基板上的取向膜可以面朝上。
在实施例中， 加热板在旋转时可以完全封盖住基板。
在实施例中， 加热板可以为圓形加热板。
在实施例中， 基板可以具有矩形形状， 并且圓形加热板的直径可以满足 以下关系式：
d2 > a2+ b2
其中， d为圓形加热板的直径， a为矩形基板的宽度， b为矩形基板的长 度。
在实施例中， 支撑台可以包括： 至少三个支撑脚和设置于至少三个支撑 脚上方的隔热平台。
在实施例中， 预固化装置还可以包括： 位于支撑台上方， 用于清洁支撑 台的清洁装置。
在实施例中， 预固化装置还可以包括： 设置于支撑台或加热板上， 用于 测量加热板到支撑台距离的测距仪。
在实施例中， 测距仪可以为激光测距仪。
在本发明提供的取向膜预固化装置中， 采用支撑面为平面的支撑台， 加 热板设置于支撑台上方且可在驱动装置的驱动下转动； 当需要对基板上的取 向膜进行预固化时， 将基«置在支撑台上， 使取向膜面朝上； 加热板对取 向膜进行加热， 并以一定速率绕加热板中心旋转， 使得取向膜受热均匀， 从 而提高取向膜预固化的质量。 此外， 在本发明中， 利用加热板的旋转来带动 空气流动， 与现有技术比， 减少了吹风装置， 大大筒化了取向膜预固化装置 的结构， 以及减少取向膜预固化装置的制备成本。 附图说明
图 1为现有技术中的取向膜预固化装置的立体结构示意图；
图 2为本发明实施例提供的取向膜预固化装置的立体结构示意图； 图 3 为本发明实施例提供的取向膜预固化装置中基板表面热风的走向 图 4为本发明实施例提供的取向膜预固化装置的俯视图。 具体实施方式
为提高取向膜预固化质量， 本发明提供了一种取向膜预固化装置， 将加 热板设置于支撑台上方且可旋转， 并采用支撑面为平面的支撑台； 在对取向 膜进行预固化时， 加热板以旋转的方式对取向膜进行加热， 使得取向膜受热 均匀， 从而提高取向膜预固化的质量。
为了使本领域技术人员更好的理解本发明的技术方案， 下面结合说明书 附图对本发明实施例进行详细的描述。
如图 2所示， 本发明实施例提供的取向膜预固化装置可以包括： 用于承 载基板 12的支撑台 20; 位于支撑台 20上方的加热板 21; 驱动装置 22, 与 加热板 21固定连接以驱动加热板 21转动。
在本发明实施例中， 将现有技术中的支撑架 11的结构改变为支撑台 20 的结构， 并将加热板 21设置于支撑台 20上方， 加热板 21可以在驱动装置 22的驱动下转动。 当对基板 12上的取向膜进行预固化时， 将基板 12放置在 支撑台 20上， 使取向膜面朝上， 加热板 21对取向膜进行加热， 并在驱动装 置 22的驱动下以一定速率旋转，使得取向膜受热均匀，进而使得取向膜厚度 均一， 从而提高取向膜预固化的质量。 此外， 在本发明实施例中， 由于加热 板 21设置在支撑台 20上方，所以加热板 21发出的热量不需要经过基板而直 接对取向膜进行加热， 从而减少了热量损失。 同时， 如图 3所示， 图中箭头 所示方向为热空气流动方向，加热板 21转动会加快热空气流动速度，从而提 高了取向膜预固化的效率。 另夕卜， 在本发明实施例中， 利用加热板 21的旋转 来带动空气流动， 与现有技术比， 吹风装置可以被省略， 大大筒化了取向膜 预固化装置的结构， 并降低取向膜预固化装置的制备成本。
在具体实施时， 上述加热板可以有多种形状， 例如橢圓形、 矩形或多边 形， 只需保证加热板 21在旋转时可以完全封盖住基板 12即可。 优选地， 上 述加热板 21可以为圓形加热板。 加热板 21可以转动即绕圓形加热板的中心 旋转。 如图 4所示， 圓形加热板的直径可以满足以下关系式：
d2 > a2+ b2
其中， d为圓形加热板的直径， a为矩形基板的宽度， b为矩形基板的长 度。
为了减少热量损失，提高热量利用率， 在一个实施例中， 支撑台 20可以 包括： 至少三个支撑脚和设置于至少三个支撑脚上的隔热平台。 在本实施例 中， 采用四个支撑脚支撑隔热平台， 在对基板 12上的取向膜进行预固化时， 基板 12可以平放在隔热平台上， 从而避免基板 12因自身重力而产生变形， 使得基板 12与加热板 21之间距离一致， 从而使得取向膜各点受热均匀， 进 而提高取向膜的预固化质量。
在一个实施例中， 预固化装置还可以包括清洁装置 23, 清洁装置 23可 以位于支撑台 20上方用于清洁支撑台 20的上表面。清洁装置 23可以在将基 板 12放置在支撑台 20上之前对支撑台 20的上表面进行清扫，以清除支撑台 20的上表面上的基板碎片及其它污染物，以保证取向膜预固化过程的清洁和 高效。
继续参照图 2,预固化装置还可以包括测距仪 24,测距仪 24可以设置于 支撑台 20或加热板 21上用于测量加热板 21到支撑台 20的距离。 在一个实 施例中， 测距仪 24可以为激光测距仪。 通过测距仪 24可以检测加热板 21 和支撑台 20之间的距离， 避免取向膜预固化过程中加热温度过高或过低。
综上所述， 在本发明的实施例提供的取向膜预固化装置中， 采用支撑面 为平面的支撑台， 加热板设置于支撑台上方且可在驱动装置的驱动下转动； 当需要对基板上的取向膜进行预固化时， 将基板放置在支撑台上， 使取向膜 面朝上； 加热板对取向膜进行加热， 并以一定速率绕加热板中心旋转， 使得 取向膜受热均匀， 从而提高取向膜预固化的质量。 另外， 在本发明的实施例 中， 加热板设置在支撑台上方， 加热板发出的热量不需要经过基板而直接对 取向膜进行加热， 减少了热量损失； 而且， 由于加热板 21转动会加快热空气 流动， 所以可以提高取向膜预固化的效率。
此外， 在本发明的实施例中， 利用加热板的旋转来带动空气流动， 与现 有技术比， 省略了吹风装置， 从而大大筒化了取向膜预固化装置的结构并降 低了取向膜预固化装置的制备成本。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
1、 一种取向膜预固化装置， 包括：
支撑台， 用于承载基板；
加热板， 位于所述支撑台上方以对所述基板上的取向膜进行加热； 驱动装置， 与所述加热板固定连接以驱动所述加热板转动。
2、如权利要求 1所述的取向膜预固化装置，其中所述基板上的取向膜面 朝上。
3、如权利要求 1所述的取向膜预固化装置，其中所述加热板在旋转时可 完全封盖住所述基板。
4、如权利要求 1所述的取向膜预固化装置，其中所述加热板为圓形加热 板。
5、如权利要求 2所述的取向膜预固化装置，其中所述基板具有矩形形状， 所述圓形加热板的直径满足以下关系式：
d2 > a2+ b2
其中， d为所述圓形加热板的直径， a为所述矩形基板的宽度， b为所述 矩形基板的长度。
6、如权利要求 1所述的取向膜预固化装置， 其中所述支撑台包括： 至少 三个支撑脚和设置于所述至少三个支撑脚上方的隔热平台。
7、如权利要求 1-6中任一项所述的取向膜预固化装置，还包括清洁装置， 该清洁装置位于所述支撑台上方以清洁所述支撑台。
8、 如权利要求 1-6中任一项所述的取向膜预固化装置， 还包括测距仪， 该测距仪设置于所述支撑台或加热板上以测量所述加热板到所述支撑台距 离。
9、如权利要求 8所述的取向膜预固化装置，其中所述测距仪为激光测距 仪。
PCT/CN2013/075077 2013-03-15 2013-05-02 取向膜预固化装置 WO2014139202A1 (zh)

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JP2002357798A (ja) * 2001-06-01 2002-12-13 Sony Corp 液晶表示装置の製造方法及び製造装置
JP2004286975A (ja) * 2003-03-20 2004-10-14 Hitachi Displays Ltd 液晶表示装置
CN101026062A (zh) * 2006-02-21 2007-08-29 乐金电子（南京）等离子有限公司 等离子显示器的玻璃基板加热设备
CN202230279U (zh) * 2011-08-30 2012-05-23 北京京东方光电科技有限公司 一种取向膜预固化装置

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Publication number Priority date Publication date Assignee Title
JP2002357798A (ja) * 2001-06-01 2002-12-13 Sony Corp 液晶表示装置の製造方法及び製造装置
JP2004286975A (ja) * 2003-03-20 2004-10-14 Hitachi Displays Ltd 液晶表示装置
CN101026062A (zh) * 2006-02-21 2007-08-29 乐金电子（南京）等离子有限公司 等离子显示器的玻璃基板加热设备
CN202230279U (zh) * 2011-08-30 2012-05-23 北京京东方光电科技有限公司 一种取向膜预固化装置

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